Distributor Gear

Quick Q: what are the symptoms of a bad distributor?

1990 Civic DX:

engine tries to cut out after releasing the clutch, mostly in 2nd, 3rd gear, and more prevelent after it’s warm.

Already replaced:

-fuel filter
-O2 sensor
-distributor cap, pin
-spark plugs

If it is a bad distributor, how complicated is setting the proper timing after having it replaced, or [...]